I don't think so Russ. 'Real' PLBs (this coming from a SPOT2 owner) are one button items. SPOT on the other hand is listed as a GPS messenger, has multiple functions for tracking (online only) and messaging. Most of these buttons are dedicated but the Custom button allows you to change the message that is sent to whomever is in your contact list. Which can also be modified based on person(s) you want to send the message too.

Globalstar, SPOT owners, recent came out with a puck sized unit that mates by bluetooth with your smartphone so that you can send test by satellite the same as if on a cell network. I may be a bit off on that particular but have been reading the advertising on it.